Answer:
They can make oxygen and they breathe in carbon so it helps reduce carbon but at the rate we make carbon it is too fast for the plants
Explanation:
 
        
             
        
        
        
Puffapod (if this is for Harry Potter )
        
             
        
        
        
Women were expected to:
-be mothers and care for children 
-cook for their families
-clean after their families
Men were expected to:
-work for financial security 
-protect their families
        
             
        
        
        
This is a issue of morality and ethics. So the answer to the first question depends on the perspective of the person. Personally I don't agree with performance enhancing drug use but I do think some of the expectations of athletes who perform in Olympic events increase the pressure to have to use them. So do I think people who use these drugs should be elected into the Hall of Fame. That is hard to answer. But I do not think using drugs takes away all of the achievement an athlete has made. It just proves that the athlete couldn't achieve the rigid sport performance without manipulation. But it doesn't mean they haven't worked hard or trained. 
I do think rules should be made for athletes. These rules would definitely weave through most of the athletes we see doing these out of the world sport records every day. That is because many of them have been proven to have used these performance enhancing drugs.
Please vote my answer brainliest. thanks!